I have an 8000 gallon gunite, salt pool that was put in one year ago. From day one the water has always tests extremely high in copper. We have already done two acid washes to remove stains from the plaster. One week after adding two bottles of metal out the copper level is back up to .4 What could be the cause? I am at wit's end.

This first started about a month after the pool was installed. Is that enough time for the heater to corrode?

I too have a copper problem and it started about 1 month after the new pool heater was installed. I am told it is a faulty heat exchange and have just started on the acid treatment. Did this work for you?

We found that the only way to remove the stains on the plaster was to drain the pool and give the plaster an acid bath. Removes the stains, looks great, but is very hard on the plaster. This was a last resort to clean the stains.